Finding the Fourth Proportional to 2,213.78, 3,054.96 and 1,219.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,213.78 : 3,054.96 = 1,219.10 : x
2. Step 2: Convert to fraction form
   2,213.78/3,054.96 = 1,219.10/x
3. Step 3: Cross multiply
   2,213.78x = 3,054.96 × 1,219.10
4. Step 4: Simplify right side
   2,213.78x = 3,724,301.74
5. Step 5: Solve for x
   x = 3,724,301.74/2,213.78
6. Step 6: Final answer
   x = 1,682.33